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Rhotic consonant

Class of consonants

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Through Orthography, Correlation and North American English

This class of sounds is difficult to characterise phonetically; from a phonetic standpoint, there is no single articulatory correlate (manner or place) common to rhotic consonants. Rhotics have instead been found to carry out similar phonological functions or to have certain similar phonological features across different languages.

Being "R-like" is an elusive and ambiguous concept phonetically and the same sounds that function as rhotics in some systems may pattern with fricatives, semivowels, or even stops. For example, the alveolar flap is a rhotic consonant in multiple languages, but in North American English, the alveolar tap is an allophone of the stop phoneme , as in water. It is likely that rhotics are not a phonetically natural class but a phonological class.

Some languages have rhotic and non-rhotic varieties, which differ in the incidence of rhotic consonants. In non-rhotic accents of English, is not pronounced unless it is followed directly by a vowel.

Types

The most typical rhotic sounds found in the world's languages are the following:

  • Trill (popularly known as rolled r): The airstream is interrupted several times as one of the organs of speech (usually the tip of the tongue or the uvula) vibrates, closing and opening the air passage. If a trill is made with the tip of the tongue against the upper gum, it is called an apical (tongue-tip) alveolar trill; the IPA symbol for this sound is . Most non-alveolar trills, such as the bilabial one, however, are not considered rhotic.
  • Tap or flap (these terms describe very similar articulations): Similar to a trill, but involving just one brief interruption of airflow. In a number of languages flaps are used as reduced variants of trills, especially in fast speech. However, in Spanish, for example, flaps and trills contrast, as in pero ("but") versus perro ("dog"). Also flaps are used as basic rhotics in Japanese and Korean languages. In Australian English and most American dialects of English, taps do not function as rhotics but are realizations of intervocalic apical stops ( and , as in butter and cider). The IPA symbol for these sounds is (or substandard for the tap, contrasted with the flap ).
  • Alveolar or retroflex approximant (as in most accents of English—with minute differences): To produce one of these rhotic approximants, the front part of the tongue approaches the upper gum, or the tongue-tip is curled back towards the roof of the mouth ("retroflexion"). No or little friction can be heard, and there is no momentary closure of the vocal tract. The IPA symbol for the alveolar approximant is and the symbol for the retroflex approximant is . There is a distinction between an unrounded retroflex approximant and a rounded variety that probably could have been found in Anglo-Saxon and even to this day in some dialects of English, where the orthographic key is r for the unrounded version and usually wr for the rounded version (these dialects will make a differentiation between right and write).
  • Uvular (popularly called guttural r): The back of the tongue approaches the soft palate or the uvula. The standard Rs in European Portuguese, French, German, Danish, and Modern Hebrew are variants of this rhotic. If fricative, the sound is often impressionistically described as harsh or grating. This includes the voiced uvular fricative, voiceless uvular fricative, and uvular trill. In northern England, there were accents that once employed a uvular R, which was called the "Northumbrian burr".
  • developmental non-rhotic Rs: Many non-rhotic British speakers have a labialization to of their Rs, which is between idiosyncratic and dialectal (southern and southwestern England), and since it includes some RP speakers, somewhat prestigious. Apart from English, in all Brazilian Portuguese dialects the ⟨rr⟩ phoneme, or , may be actually realized as other, traditionally non-rhotic, fricatives (and most often is so), unless it occurs single between vowels, being so realized as a dental, alveolar, postalveolar or retroflex flap. In the syllable coda, it varies individually as a fricative, a flap or an approximant, though fricatives are ubiquitous in the Northern and Northeastern regions and all states of Southeastern Brazil but São Paulo and surrounding areas. The total inventory of allophones is rather large: , the latter eight being particularly common, while none of them except archaic contrast with the flap in all positions, and may occur alone in a given dialect. Few dialects, such as sulista and fluminense, give preference to voiced allophones; elsewhere, they are common only as coda, before voiced consonants. Additionally, some other languages and variants, such as Haitian Creole and Timorese Portuguese, use velar and glottal fricatives instead of traditional rhotics, too. In Vietnamese, depending on dialect, the rhotic can occur as , or . In modern Mandarin Chinese, the phoneme , which is represented as ⟨r⟩ in Hanyu Pinyin, resembles the rhotics in other languages in realization, thus it can be considered a rhotic consonant.

Furthermore, there is also a non-syllabic open vowel (conventional transcription, the exact quality varies) that patterns as in some Germanic languages such as German, Danish and Luxembourgish. It occurs only in the syllable coda.

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